More optimizations, see summary in 1GHFO1Munlabeled-1.4.6

1 files changed, 21 insertions, 6 deletions

diff --git a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java
index afa00741f..587164e0b 100644
--- a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java
+++ b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/WorkspaceRoot.java
@@ -5,12 +5,21 @@ package org.eclipse.core.internal.resources;
  * All Rights Reserved.

  */

 

-import org.eclipse.core.resources.*;

-import org.eclipse.core.runtime.*;

+import java.util.HashMap;

+

 import org.eclipse.core.internal.utils.Assert;

 import org.eclipse.core.internal.utils.Policy;

+import org.eclipse.core.resources.*;

+import org.eclipse.core.runtime.*;

 

 public class WorkspaceRoot extends Container implements IWorkspaceRoot {

+	/**

+	 * As an optimization, we store a table of project handles

+	 * that have been requested from this root.  This maps project

+	 * name strings to project handles.

+	 */

+	private HashMap projectTable = new HashMap(10);

+	

 protected WorkspaceRoot(IPath path, Workspace container) {

 	super(path, container);

 	Assert.isTrue(path.equals(Path.ROOT));

@@ -105,10 +114,16 @@ public IProject getProject() {
  * @see IResource#getProject

  */

 public IProject getProject(String name) {

-	IPath path = Path.ROOT.append(name);

-	String message = "resources.projectPath";

-	Assert.isLegal(path.segmentCount() == ICoreConstants.PROJECT_SEGMENT_LENGTH, message);

-	return new Project(path, workspace);

+	//first check our project cache

+	Project result = (Project)projectTable.get(name);

+	if (result == null) {

+		IPath path = Path.ROOT.append(name);

+		String message = "resources.projectPath";

+		Assert.isLegal(path.segmentCount() == ICoreConstants.PROJECT_SEGMENT_LENGTH, message);

+		result = new Project(path, workspace);

+		projectTable.put(name, result);

+	}

+	return result;

 }

 /**

  * @see IResource#getProjectRelativePath